class RDPClient:
    def __init__(self, host, port=3389, username=None, password=None):
        self.host = host
        self.port = port
        self.username = username
        self.password = password

    def connect(self):
        # 这里预留RDP连接实现，后续可集成第三方库或调用系统命令
        pass

    def disconnect(self):
        # 断开RDP连接
        pass